West-Mark originated in Modesto, California in 1967 to fill a need for the manufacturing and repair of tank transportation equipment for the dairy industry. Having established our reputation for excellent workmanship and the use of light weight equipment for sanitary products, West-Mark diversified it's engineering capabilities and began to produce transport tanks of all types by 1973. By the early 70's West-Mark expanded their product line into the fire apparatus industry.
RSI Logistics, Inc. (RSI) specializes in the transportation of bulk materials throughout North America. RSI is organized into three business areas: rail logistics, terminal operations, and bulk intermodal.